Who discovered this? This element was discovered in ancient times, and was known to the Mesopotamians, Egyptian, Greeks and the Romans. When was it discovered? First uses of lead were around 3500 B.C.
Symbol: Pb Origin of the symbol: Came from the Latin word for waterwork- Plumbum. Atomic number: 82 Atomic mass: 207.02
Number of protons: 82 Number of neutrons: 125 Number of electrons: 82
Where is it found: Land State of matter: Solid.
Melting point: 327.46 C Boling point: 1749 C Density: 11.34 g/cm3 Abundance in the Earth’s crust: 1.4×101 milligrams per kilogram
Uses: -The metal is very effective as a sound absorber, is used as a radiation shield around X-ray equipment and nuclear reactors, and is used to absorb vibration. -Commonly used in a car battery. -Due to its low melting point and cost, lead is used as projectiles for fishing sinkers and firearms. -Lead, in the form of strips or tape is used in the manufacturing of tennis racquets to increase its weight.
Interesting facts: -Lead is toxic. -Lead has long been recognized as a harmful environmental pollutant. -Alchemists believed lead to be the oldest metal. It was associated with the planet Saturn.
- Lead is classified in the "other metals" section which can be located in groups 13, 14, and 15 of the Periodic table.
Who discovered this?
This element was discovered in ancient times, and was known to the Mesopotamians, Egyptian, Greeks and the Romans.
When was it discovered?
First uses of lead were around 3500 B.C.
Symbol: Pb
Origin of the symbol: Came from the Latin word for waterwork- Plumbum.
Atomic number: 82
Atomic mass: 207.02
Number of protons: 82
Number of neutrons: 125
Number of electrons: 82
Where is it found: Land
State of matter: Solid.
Melting point: 327.46 C
Boling point: 1749 C
Density: 11.34 g/cm3
Abundance in the Earth’s crust: 1.4×101 milligrams per kilogram
Uses:
-The metal is very effective as a sound absorber, is used as a radiation shield around X-ray equipment and nuclear reactors, and is used to absorb vibration.
-Commonly used in a car battery.
-Due to its low melting point and cost, lead is used as projectiles for fishing sinkers and firearms.
-Lead, in the form of strips or tape is used in the manufacturing of tennis racquets to increase its weight.
Interesting facts:
-Lead is toxic.
-Lead has long been recognized as a harmful environmental pollutant.
-Alchemists believed lead to be the oldest metal. It was associated with the planet Saturn.
- Lead is classified in the "other metals" section which can be located in groups 13, 14, and 15 of the Periodic table.
Sources:
http://neon.mems.cmu.edu/cramb/Processing/history.html
http://education.jlab.org/itselemental/ele082.html
http://periodic.lanl.gov/elements/82.html
http://www.buzzle.com/articles/uses-of-lead.html